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Importtech Nov 2nd, 05, 8:52 PM Anyone know what the lightest production flywheel weighs for a sbc 2 piece crank and what did it come on. Also what size clutch does it fit.. I'm using a 3 speed saginaw if that makes any difference. thanks. jack Importtech Nov 7th, 05, 8:03 PM ttt TD509EFI Nov 7th, 05, 11:23 PM From the goodwrench website: 14085720 Flywheel Outside diameter is 12 3/4" for years 1955-85. Crank Flange bolt pattern: 3.58"; clutch dia.: 10.4"; starter ring gear teeth: 153. Lightweight nodular iron flyweel. Weighs approximately 15 pounds. For two piece crank seal. I believe this is the lightest flywheel GM offers, but it was never a reg8ular production part, just over the counter, AFAIK. John Importtech Nov 8th, 05, 7:53 PM John thats a BIG Help! I appreciate it! Jack | ||